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Get a large 3 phase AC motor. Feed one phase. Needs a starting capacitor to get it going. Once running load the other phases for your 15KW ample-fire.

What is the source of rf that you wish to amplify? Most HF ham rigs already make more power than can be had from a pair of 6L6s.

A little carrier on an ssb signal will not hurt a thing. If it keeps you awake at night or your buddies point and laugh try the balanced modulator adjustment as mentioned. There are shortwave sideband stations which transmit with carrier. It provides phase information for proper demodulation.

Sorry to hear this.

Why are you measuring high voltage? Just curious.

Here's a calculator where the frequency of use can be changed. EME Path Loss IIRC distance is measured in wavelengths so 11 meters puts the target much closer than V/UHF. Thermal noise in the cable is the main reason a preamp is effective at the antenna on VHF. That may be less of an...

Not the site you are looking for but plenty of rhombics. A Visit To W6AM

Do not sneeze when performing this repair!

Just use plain language and skip all the cutsy stuff.

TV 300 ohm twinlead works and shouldn't be any worse than coax looks wise. It's losses go up when wet but will still allow 1:1 SWR on all bands from 20 to 10 with the right coupler. Living in a condo I'd more concerned wioth getting every last bit of R.F. off the feedline.

That makes it an I.F. filter as the ssb generator is using an intermediate frequency.

Eimac 4-65As are around and might play OK at 800-1000 volts. They can be triode strapped. Might be worth a try.

Switch to open wire feed and a balanced tuner and your 20 meter resin ant antenna will come alive.

I've used the cheapies listed on ebay with no problems. There are a lot of horror stories about Asian 572Bs. I must be lucky.

How does your idling current compare with other SB-200s?

No. It might but probably not. Some are close.

Dip the grid? GG linears should be tuned for rated output with rated drive while not exceeding grid current. Nothing gets dipped. The plate should dip somewhere near max output but some design's neutralization is less than perfect and the dip doesn't coincide with max out.

Dunno about the key up but the bananna mic might have a bad ground connection. You can also get a nice bite from this when holding the mic and unkeying if your other hand is grounded. I'd re-do the connector.

Avatar material.

When a tube amp is run into distortion the sound is very different from a sloid state type. Run both at design power levels and the differences are genrally not much.